Improvement in hay-spreaders



BURT & HlLDR ET-H.

Hay Spreader. Patented Nov. 24, 1868'.

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GEORGE E. BURT AND EDWIN A. I-IILDRETH, OF HARVARD, MAS- SACHUSETTS.

Letters Patent No. 84,257,111015011 November 24, 1868.

IMPRO'VEMENT IN HAY-SPREADERS.

The Schedule referred to in these Letters Patent and making m of the Same.

Toallwhom it may concern Be itknown that we, GEORGE E. BURT and EDWIN A. HILDRETH, both of Harvard, in the coiuity of Wor ce'ster, and State ofMu-ssachusetts, have invented anew and useful Improvement in Hay-Tedders and we do hereby declare-that the following is a full and exact description thereof, reference being had to the accompanying (h awings, and to the letters of reference marked thereon.

It is well known that in hay-tedders now in use, constructed with vertically-revolving forks, either propelled by reels, cranks, or other devices, the supporting wheels roll onftlie hay; those that are'constructed.

with revolving reels, with the supporting-wheels outside of the reels, rest on and tread the hay down after it has been teddered; and those tedders, with the wheels in front of the operating-cranks or forks, roll on the hay before it is teddered.

The great objection to putting the wheels in front of the forks is that, in passing over irregular ground,

the rear end of the tedder is tilted down or up, and the forks dig into the elevations of earth, or leave the hay in depressions or hollows without stirring it, thus breaking the forks, and otherwise increasing the liability of injuring the machine. 1

To overcomethe above objections, and alsoto construct avery cheap tedder, is the object of this invention. p

The natiu'e of om invention consists in constructing hay-tedders with revolving forks, so acting that the hay is removed from the front ofthe wheels in such a manner that they do not roll on the hay, either before or after it is teddered.

Also, in constructing horizonh l-propelling arms, so as to allow the forks to follow the irregular surface of the ground without digging into the earth, and to pass obstacles without strain or damage to the forks.

Also, in giving such motion to the forks that they will dip and gather the hay in front of the wheels of the tedder, and rise and discharge it on one side or in the rear.

In the accompanying drawings- Figure l is an end vie-w.

Figure 2 is a side view.

To enable others skilled in the art to make and use our invention, we will proceed to describe its construc tion and operation.

In the accompanying drawings, B Bare the supporting-wheels; A A, the thills; G, the axle; c, a bevel-gear; (I, the pinion, which is firmly fixed to tho propelling-tube c, which is constructed at the top with projections, to which are attached the horizontal propelling-arms g g.

The tube a is provided with a hole or chamber, which fits the upright shaft 1, upon whichthe tube revolves.

The shaft f is firmly fixed to the tube 0, which is that may befound desirable.

1 freely.

a is a disk, which is firmly fixed to the shaft f.

s is a wrist, placed eccentrically to the shaft f, and is attached to the disk a, which is provided-with two or more seats for the wrist s, which, in the drawings, is placed in front, or nearest the thills.

,-h h are operating-arms, constructed with flexible joints m m, and are attached to the wrist s, and revolve on it.

The propelling-arms g g are provided with flexible joints l Z, and are attached to the tube '0, which re- Volves'on the shaft f.

t c are fork-staves, and are pivoted to arms 9 g and h h by pivots h It and n n.

jj are forks, and are attached to they staves ii by pins q and 1).

f is a screw-nut and bolt, that attaches the thills to the tedder.

S is the seat for the driver, supported by seatsprings t t.

a v are springs, which tend to lift a portion of the dead weight of the revolving arms 9 g.'

Any number. of arms and forks may be employed Operation.

When a horse is attached to the thills', and the tedder is drawn forward, the supporting-Wheels B roll on the ground, which turns the axle O and the bevel-gear c, which cogs into the pinion d and turns the tube 0.

The propelling-arms g g, being fixed to the tube e, are revolved horizontally around the upright shaft j, which is held firmly and still in position by the tube 0 on the axle G. A

The operating-arms h it turn onv the Wrist s in the disk u, the wrist being placed eccentrically with the shaft f.

The operating-arms h h and the propelhng-arms g g being both attached to the fork-staves t" t by the pivots k k and n a, all revolve together.

The arms 9 9 have the shaft f for a centre,-and the arms h it have the wrist s for a centre.

As the wrist sis placed at a point in front of the shaft f, and is stationary, it will be seen. that the arms g and 71- h revolve eccentrically in regard to each other, and as these arms are connected together by the fork-staves 11 i and the pivots k and n, the forks are made to dip, and stand nearly at right angles with the arms g g, and gather the hay in front of the tedder; but as the forks revolve, they are made to rise, so as to stand nearly in a right line with the arms g g in the rear, and thus discharge the hay in the rear of the teddcr, completely stirring up the hay, leaving it very light to dry, and clearing the track for the Wheels from all the hay as the teddcr moves on.

he flexible joints I and m, in the arms 9 g and 11. I1, allow the forks j j to rise and fall, and thus follow the uneven surface of the ground.

The springs r 1!,llftlilg a portion of the dead Weight of the revolving arm I and flJlli-SlSELVU-h' '0', allow the forks to glide easily over rough, uneven ground, without liability of digging on the elevations, or leaving the hay in depressions.

The elasticity of the forks allows them to yield to abrupt obstacles.

By changing the position of the eccentric-wrist s, the hay may be discharged onthe side into a windrow, and thus the tcdder may also be used as a rake.

What we claim as our invention, and desire to secure by Letters Patent, is-

1. The forks j j, when so arranged as to revolve horizontally over the ground, turning; the hay, substantially as described, and for the purpose forth.

2. The forks jj, when so arranged as to revolve horizontally over the ground and sweep the hay from before the wheels, in order to give them a path clear from grass or hay, substantially as described aml setforth.

3. The arms g and 71, in combination with the forl.-- handle '1', when so arranged as to revolve the forks j j horizontally over the surface of the ground, gathering and dischargingor turning the hay, substantially as,

described and set forth.

4. The forksjj, when actuated by mechanism, so constructed that there shall be imparted to the forks, in addition to their hor'rzonta-l rotary motion, a dippiug and rising motion, to collect and disel'large the hay, substantially as described.

5. The iorksjj, when hung from hinges I and m,

(one or both,) and so arranged that the forks can freely rise, and pass over rising ground or obstacles, substantially as described, and for the. purpose set forth.

(5. The shaft j, disk '11, and er-ceiitric-wrist s, in con;- bination with the driving-arm 1 and operating-arm [4,

arranged to operate the i'brksjj, substantially as de-- scribed. p

T. The gear 0, pinion (1, tube shaft f, disk 21, and wrist s, when used in combination to operate the arms and forks of a ba'iy-tcdder or rake, substantially as de scribed.

8. The flexible joints 1 and m in the arms y and h, to allow the forks to follow over rising ground or obs staeles, substantiallv as described, and for the purpose set forth. I

J The combination of the'ibrksjj, the pivots q, pins'p, stares i, and pivots I: and n, with the drivingarm y and operating-arm h, operating as and for the purposes set forth.

10. The springs o 1', when so arranged as to lift a portionof the weight of the forksjj and their connections, substantially as. deseribcd,'aml for the purpose set forth. I

I GEORGE E. BURT. Witnesses: EDW'IN A. HILDRETH.

S. 13. HILDRETH, E. H. Bum. 

